Looking cool as the weather heats up is as much about sunglasses as it is about sandals and swimsuits. Eye wear, for all its practicality, has become a booming fashion industry unto itself.

For 2017, the runway is replete with colored lenses — specifically blues and yellows.

Fashioners last fall reported that various lens hues enhance skin tones and makeup. Colored frames do the same. Michael Kors has a new aqua lens look in white rims. Ray-Ban pairs blue frames with ombre-tinted lenses that pick up the blue, but sport other colors as well. Gucci, too, has a breezy new blue rectangular plastic frame style.

Vogue’s Liana Satenstein revealed last spring that this summer would be all about tinted shades. Yellow lenses in a rimless style turned heads in a Louis Vuitton Resort 2017 show. Byblos Milano’s funky double rims sport pale yellow lenses, while Marni’s yellow lens version is oversized and rimless.

Designers are experimenting with other colors, too, even greens and purples. And frame styles run the gamut, from “Hunger Games” futuristic to floral-embellished. Every geometric shape seems to pass muster, while the aviator trend holds its own. Making Pouted.com’s trend list for 2017 are marble frames for textural interest and sophistication.

Gary Heiting, OD, senior editor of All About Vision, says, “The most significant new trend in sunglasses is a strong emphasis on blue-light protection.” He says the push this year is for eye-care professionals and eyewear manufacturers to “create greater awareness of blue light and the need to protect your eyes from it — primarily by wearing UV- and blue-light protective sunglasses outdoors at all times.”